TM 11-5840-217-34-1
3-9.
TRANSMITTER CONTROL CIRCUIT CHECKS
CONDITIONS
CIRCUIT
KEY POINTS
PAGE
RADIATE light does not come on,
-27 power supply
a. S1604
transmitter will not fire. Blank A
b. TP1801-A (fig 3)
scope.
RADIATE light comes on but goes
Transmitter
a. K502-4
out when RADIATE switch is
control circuits
b. K503-2
released. Blank A scope.
c. K504-7
d. K504-2-3
RADIATE light comes on, M401-6
Transmitter
Overload circuits
moves slightly but returns to zero,
control circuits
RADIATE light goes out when
RADIATE switch is released. Blank
A scope.
Figure 7. Transmitter control circuit block diagram
31
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